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  <xsd:element id="bku_GrossAmountsRecognizedDerivativeAssetsAndLiabilities" name="GrossAmountsRecognizedDerivativeAssetsAndLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element id="bku_LeasesPolicyTableTextBlock" name="LeasesPolicyTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
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  <xsd:element id="bku_LesseeOperatingandFinanceLeaseInformationTableTextBlock" name="LesseeOperatingandFinanceLeaseInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_LiabilitybasedawardssettledinsharesMember" name="LiabilitybasedawardssettledinsharesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_LoanToValueEightyPercentOrMoreMember" name="LoanToValueEightyPercentOrMoreMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_LoanToValueSeventyPercentToEightyPercentMember" name="LoanToValueSeventyPercentToEightyPercentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_LoanToValueSixtyPercentOrLessMember" name="LoanToValueSixtyPercentOrLessMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element id="bku_LoansAndLeasesReceivableAllowanceCoveredAndNotCovered" name="LoansAndLeasesReceivableAllowanceCoveredAndNotCovered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_LoansAndLeasesReceivableNetOfDeferredIncomeCovered" name="LoansAndLeasesReceivableNetOfDeferredIncomeCovered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bku_LoansAndLeasesReceivableNetOfDeferredIncomeCoveredAndNotCovered" name="LoansAndLeasesReceivableNetOfDeferredIncomeCoveredAndNotCovered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bku_LoansandLeasesReceivableNetChargeOffRateCalculationBanksUsedInAssumption" name="LoansandLeasesReceivableNetChargeOffRateCalculationBanksUsedInAssumption" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
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  <xsd:element id="bku_MaximumperiodofdelinquencyatwhichanyoutstandingresidentialloanbalanceinexcessoffairvaluelesscosttosellischargedoffinDuration" name="MaximumperiodofdelinquencyatwhichanyoutstandingresidentialloanbalanceinexcessoffairvaluelesscosttosellischargedoffinDuration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_MinimumperiodofdelinquencyfornoncoveredloanssecuredbyresidentialrealestateatwhichanassessmentofcollateralvalueismadeinDuration" name="MinimumperiodofdelinquencyfornoncoveredloanssecuredbyresidentialrealestateatwhichanassessmentofcollateralvalueismadeinDuration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="bku_NetImpactOnPretaxEarningsMember" name="NetImpactOnPretaxEarningsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_NewLoansMember" name="NewLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_NonACILoansCoveredMember" name="NonACILoansCoveredMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="bku_NonCoveredDomain" name="NonCoveredDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_NonMortgageAssetBackedSecuritiesMember" name="NonMortgageAssetBackedSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_NonmarketableEquitySecuritiesPolicyTextBlock" name="NonmarketableEquitySecuritiesPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_NumberOfHeldToMaturitySecurities" name="NumberOfHeldToMaturitySecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bku_NumberOfLossSharingAgreements" name="NumberOfLossSharingAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_NumberOfSecuritiesAmountOfImpairmentInsignificant" name="NumberOfSecuritiesAmountOfImpairmentInsignificant" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="bku_NumberOfSecuritiesDeterminedToBeOtherThanTemporarilyImpairedDuringThePeriod" name="NumberOfSecuritiesDeterminedToBeOtherThanTemporarilyImpairedDuringThePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_NumberOfSubsidiaries" name="NumberOfSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_OREOandRepossessedAssetsMember" name="OREOandRepossessedAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_Obligationincurredinacquisitionoflimitedpartnership" name="Obligationincurredinacquisitionoflimitedpartnership" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_OneToFourSingleFamilyResidentialMember" name="OneToFourSingleFamilyResidentialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_OperatingandDirectFinanceLeaseIncomeAbstract" name="OperatingandDirectFinanceLeaseIncomeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_OperatingandDirectFinanceLeaseIncomeTableTextBlock" name="OperatingandDirectFinanceLeaseIncomeTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_OperatingandFinanceLeaseInformationAbstract" name="OperatingandFinanceLeaseInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_OperatingandFinanceLeaseInformationTableTextBlock" name="OperatingandFinanceLeaseInformationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_OperatingleaseliabilitiesrecognizedfromobtainingROUassets" name="OperatingleaseliabilitiesrecognizedfromobtainingROUassets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_OtherCommercialandindustrialMember" name="OtherCommercialandindustrialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_PayfixedinterestrateswapsMember" name="PayfixedinterestrateswapsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_PayvariableinterestrateswapsMember" name="PayvariableinterestrateswapsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PercentFDICWillReimburseForLosses" name="PercentFDICWillReimburseForLosses" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bku_PercentOfElectiveDeferralsWhichVestImmediately" name="PercentOfElectiveDeferralsWhichVestImmediately" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PercentOfLossesInExcessOfMaximumAmountFDICWillReimburse" name="PercentOfLossesInExcessOfMaximumAmountFDICWillReimburse" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bku_PercentOfMatchingContributionsWhichVestUponTheEarlierOfADefinedChangeInControlOrTheParticipantsDeathDisabilityAttainmentOfNormalRetirementAgeOrTheCompletionOfTwoYearsOfService" name="PercentOfMatchingContributionsWhichVestUponTheEarlierOfADefinedChangeInControlOrTheParticipantsDeathDisabilityAttainmentOfNormalRetirementAgeOrTheCompletionOfTwoYearsOfService" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PercentOfTotalLoans" name="PercentOfTotalLoans" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="bku_PerformanceshareunitsMember" name="PerformanceshareunitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PeriodAfterReceiptOfNotificationOfFilingFromTheBankruptcyCourtAtWhichAnyOutstandingBalanceInExcessOfFairValueOfCollateralLessCostToSellAtWhichItIsChargedOff" name="PeriodAfterReceiptOfNotificationOfFilingFromTheBankruptcyCourtAtWhichAnyOutstandingBalanceInExcessOfFairValueOfCollateralLessCostToSellAtWhichItIsChargedOff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PeriodWithinDaysOfDiscoveryOfFraudulentActivityAtWhichAnyOutstandingBalanceInExcessOfFairValueOfCollateralLessCostToSellAtWhichItIsChargedOff" name="PeriodWithinDaysOfDiscoveryOfFraudulentActivityAtWhichAnyOutstandingBalanceInExcessOfFairValueOfCollateralLessCostToSellAtWhichItIsChargedOff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PeriodWithinDeterminationOfLossIfAllBorrowersAreDeceasedAtWhichAnyOutstandingBalanceInExcessOfFairValueOfCollateralLessCostToSellAtWhichItIsChargedOff" name="PeriodWithinDeterminationOfLossIfAllBorrowersAreDeceasedAtWhichAnyOutstandingBalanceInExcessOfFairValueOfCollateralLessCostToSellAtWhichItIsChargedOff" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PeriodofdelinquencyofconsumerloansatwhichatwhichtheyarechargedoffwhenmanagementdeemsthemtobeuncollectibleinDuration" name="PeriodofdelinquencyofconsumerloansatwhichatwhichtheyarechargedoffwhenmanagementdeemsthemtobeuncollectibleinDuration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PeriodofdelinquencyofinterestatwhichresidentialandconsumerloansotherthanACIloansareplacedonnonaccrualstatusunlesstheloaniswellsecuredandintheprocessofcollection" name="PeriodofdelinquencyofinterestatwhichresidentialandconsumerloansotherthanACIloansareplacedonnonaccrualstatusunlesstheloaniswellsecuredandintheprocessofcollection" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PeriodofdelinquencyofprincipalorinterestatwhichcommercialloansareplacedonnonaccrualstatusunlesstheloaniswellsecuredandintheprocessofcollectioninDuration" name="PeriodofdelinquencyofprincipalorinterestatwhichcommercialloansareplacedonnonaccrualstatusunlesstheloaniswellsecuredandintheprocessofcollectioninDuration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_PeriodofprincipalorinterestpaidatwhichresidentialloansarereturnedtoaccrualstatusinDuration" name="PeriodofprincipalorinterestpaidatwhichresidentialloansarereturnedtoaccrualstatusinDuration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_PinnaclePublicFinanceMember" name="PinnaclePublicFinanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_Plan2010Member" name="Plan2010Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_PrivatelabelresidentialmortgagebackedsecuritiesandCMOsInvestmentgradeMember" name="PrivatelabelresidentialmortgagebackedsecuritiesandCMOsInvestmentgradeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_PrivatelabelresidentialmortgagebackedsecuritiesandCMOsNoninvestmentgradeMember" name="PrivatelabelresidentialmortgagebackedsecuritiesandCMOsNoninvestmentgradeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_RSUandPSUAwardsMember" name="RSUandPSUAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_Salestypeordirectfinancingleasegrossinvestment" name="Salestypeordirectfinancingleasegrossinvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bku_ScheduleOfDerivativesOffsettingOfDerivativeAssetsAndLiabilitiesTableTextBlock" name="ScheduleOfDerivativesOffsettingOfDerivativeAssetsAndLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ScheduleofDirectorSalesTypeFinanceLeasesAbstract" name="ScheduleofDirectorSalesTypeFinanceLeasesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_ScheduleofDirectorSalesTypeFinanceLeasesTableTextBlock" name="ScheduleofDirectorSalesTypeFinanceLeasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ScheduleofFutureMinimumLeasePaymentsforOperatingandFinanceLeasesAbstract" name="ScheduleofFutureMinimumLeasePaymentsforOperatingandFinanceLeasesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_ScheduleofFutureMinimumLeasePaymentsforOperatingandFinanceLeasesTableTextBlock" name="ScheduleofFutureMinimumLeasePaymentsforOperatingandFinanceLeasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ScheduleofFutureMinimumRentalPaymentonOperatingLeasesAbstract" name="ScheduleofFutureMinimumRentalPaymentonOperatingLeasesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ScheduleofLeaseCostsAbstract" name="ScheduleofLeaseCostsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ScheduleofLeasesCashFlowInformationAbstract" name="ScheduleofLeasesCashFlowInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ScheduleofROUAssetsandLeaseLiabilitiesAbstract" name="ScheduleofROUAssetsandLeaseLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_ScheduleofROUAssetsandLeaseLiabilitiesTableTextBlock" name="ScheduleofROUAssetsandLeaseLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ScheduleoffutureminimumleasepaymentsunderdirectorsalestypefinancingleasesAbstract" name="ScheduleoffutureminimumleasepaymentsunderdirectorsalestypefinancingleasesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_ServicingRightsMember" name="ServicingRightsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodDateOfGrantClosingPriceMaximum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodDateOfGrantClosingPriceMaximum" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodDateOfGrantClosingPriceMinimum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodDateOfGrantClosingPriceMinimum" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateGrantDateFairValueVested" name="SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateGrantDateFairValueVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_SinglefamilyrentalrealestatebackedsecuritiesMember" name="SinglefamilyrentalrealestatebackedsecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_SmallBusinessAdministrationSecuritiesMember" name="SmallBusinessAdministrationSecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_SoftwareandCCATableTextBlock" name="SoftwareandCCATableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_SummaryofSignificantAccountingPoliciesLineItems" name="SummaryofSignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_SummaryofSignificantAccountingPoliciesTable" name="SummaryofSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_TaximedallionMember" name="TaximedallionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_Thevaluebelowwhichnonaccrualstatuscommercialrelationshipsmaybeevaluatedforimpairmentatmanagementsdiscretion" name="Thevaluebelowwhichnonaccrualstatuscommercialrelationshipsmaybeevaluatedforimpairmentatmanagementsdiscretion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bku_TotalLeaseLiabilities" name="TotalLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityPaymentsDue" name="TotalLeaseLiabilityPaymentsDue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityPaymentsDueAfterYearFive" name="TotalLeaseLiabilityPaymentsDueAfterYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityPaymentsDueYearFive" name="TotalLeaseLiabilityPaymentsDueYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityPaymentsDueYearFour" name="TotalLeaseLiabilityPaymentsDueYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityPaymentsDueYearThree" name="TotalLeaseLiabilityPaymentsDueYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityPaymentsDueYearTwo" name="TotalLeaseLiabilityPaymentsDueYearTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityPaymentsRemainderofFiscalYear" name="TotalLeaseLiabilityPaymentsRemainderofFiscalYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalLeaseLiabilityUndiscountedExcessAmount" name="TotalLeaseLiabilityUndiscountedExcessAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="bku_TotalRightofUseAsset" name="TotalRightofUseAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bku_Totalcashpaidforamountsincludedinthemeasurementofleaseliabilities" name="Totalcashpaidforamountsincludedinthemeasurementofleaseliabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="bku_Totalfinanceleasecost" name="Totalfinanceleasecost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bku_TotalleaseliabilitiesrecognizedfromobtainingROUassets" name="TotalleaseliabilitiesrecognizedfromobtainingROUassets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_USGovernmentagencyandsponsoredenterpriseresidentialmortgagebackedsecuritiesMember" name="USGovernmentagencyandsponsoredenterpriseresidentialmortgagebackedsecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_UnpaidPrincipalBalanceOfAciLoans" name="UnpaidPrincipalBalanceOfAciLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bku_UnpaidprincipalbalanceofcoveredloansretainedaftertheterminationoftheSingleFamilyShareLossAgreement" name="UnpaidprincipalbalanceofcoveredloansretainedaftertheterminationoftheSingleFamilyShareLossAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bku_Unrealizedlossasapercentofamortizedcostonsecuritiesincontinuousunrealizedlosspositions" name="Unrealizedlossasapercentofamortizedcostonsecuritiesincontinuousunrealizedlosspositions" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="bku_UnrecognizedTaxBenefitsIncomeTaxPenaltiesandInterestExpensenetoftax" name="UnrecognizedTaxBenefitsIncomeTaxPenaltiesandInterestExpensenetoftax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_UnvestedRestrictedShareAwardsMember" name="UnvestedRestrictedShareAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="bku_UsGovernmentSponsoredEnterprisesDebtSecuritiesCommercialMember" name="UsGovernmentSponsoredEnterprisesDebtSecuritiesCommercialMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="bku_ValueAtWhichNonAccrualStatusCommercialRelationshipsAreEvaluatedForImpairment" name="ValueAtWhichNonAccrualStatusCommercialRelationshipsAreEvaluatedForImpairment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="bku_ValueOfPledgedRealEstateLoansWithUnpaidPrincipalBalance" name="ValueOfPledgedRealEstateLoansWithUnpaidPrincipalBalance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="bku_WeightedAverageLifeOfInvestmentPortfolio" name="WeightedAverageLifeOfInvestmentPortfolio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
</xsd:schema>
